Commit 6a1cac27 authored by Michael Marineau's avatar Michael Marineau Committed by Ian Lance Taylor

runtime: check sched_getaffinity return value

Android on ChromeOS uses a restrictive seccomp filter that blocks
sched_getaffinity, leading this code to index a slice by -errno.

Change-Id: Iec09a4f79dfbc17884e24f39bcfdad305de75b37
Reviewed-on: https://go-review.googlesource.com/34794Reviewed-by: default avatarIan Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
parent d698e614
......@@ -91,6 +91,9 @@ func getproccount() int32 {
const maxCPUs = 64 * 1024
var buf [maxCPUs / (sys.PtrSize * 8)]uintptr
r := sched_getaffinity(0, unsafe.Sizeof(buf), &buf[0])
if r < 0 {
return 1
}
n := int32(0)
for _, v := range buf[:r/sys.PtrSize] {
for v != 0 {
......
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